/**
 * 全局自定义指令插件
 */

import store from '@/store'

const directives = {
  install: function(Vue) {
    // v-dialogDrag: 弹窗拖拽
    Vue.directive('dialogDrag', {
      bind(el, binding, vnode, oldVnode) {
        const dialogHeaderEl = el.querySelector('.el-dialog__header')
        const dragDom = el.querySelector('.el-dialog')
        dialogHeaderEl.style.cursor = 'move'
        // 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null)
        const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null)
        dialogHeaderEl.onmousedown = (e) => {
        // 鼠标按下，计算当前元素距离可视区的距离
          const disX = e.clientX - dialogHeaderEl.offsetLeft
          const disY = e.clientY - dialogHeaderEl.offsetTop
          const screenWidth = document.body.clientWidth // body当前宽度
          const screenHeight = document.documentElement.clientHeight // 可见区域高度(应为body高度，可某些环境下无法获取)

          const dragDomWidth = dragDom.offsetWidth // 对话框宽度
          const dragDomheight = dragDom.offsetHeight // 对话框高度

          const minDragDomLeft = dragDom.offsetLeft
          const maxDragDomLeft = screenWidth - dragDom.offsetLeft - dragDomWidth

          const minDragDomTop = dragDom.offsetTop
          const maxDragDomTop = screenHeight - dragDom.offsetTop - dragDomheight
          // 获取到的值带px 正则匹配替换
          let styL, styT
          // 注意在ie中 第一次获取到的值为组件自带50% 移动之后赋值为px
          if (sty.left.includes('%')) {
            styL = +document.body.clientWidth * (+sty.left.replace(/\%/g, '') / 100)
            styT = +document.body.clientHeight * (+sty.top.replace(/\%/g, '') / 100)
          } else {
            styL = +sty.left.replace(/\px/g, '')
            styT = +sty.top.replace(/\px/g, '')
          }
          document.onmousemove = function(e) {
          // 通过事件委托，计算移动的距离
            let l = e.clientX - disX
            let t = e.clientY - disY
            // 边界处理
            if (-(l) > minDragDomLeft) {
              l = -(minDragDomLeft)
            } else if (l > maxDragDomLeft) {
              l = maxDragDomLeft
            }
            if (-(t) > minDragDomTop) {
              t = -(minDragDomTop)
            } else if (t > maxDragDomTop) {
              t = maxDragDomTop
            }
            // 移动当前元素
            dragDom.style.left = `${l + styL}px`
            dragDom.style.top = `${t + styT}px`
          // 将此时的位置传出去
          // binding.value({x:e.pageX,y:e.pageY})
          }
          document.onmouseup = function(e) {
            document.onmousemove = null
            document.onmouseup = null
          }
        }
      }
    })
    // v-auth 按钮权限指令
    Vue.directive('auth', {
    // 当被绑定的元素插入到 DOM 中时……
      inserted: function (el, binding) {
        const superUserInfo = store.getters.SUPER_USER_INFO
        if (superUserInfo.id === 1) {
          return
        }
        // binding.value 是传过来的menuId
        const isAuth = superUserInfo.auths.includes(binding.value + '')
        if (!isAuth) {
          el.disabled = 'disabled'
          el.style = 'opacity: .5; cursor: not-allowed;'
        }
      }
    })
    // v-trim 去除非法输入
    Vue.directive('trim', {
      // 当被绑定的元素插入到 DOM 中时……
      inserted: function (el, binding) {
        el.onkeyup = function () {
          el.querySelector('input').value = el.querySelector('input').value.replace(/[, ~`]/g, '')
        }
      }
    })
  }
}
export default directives
